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Find the most common element in a list
...same basic idea, just expressed more simply and compactly... but, alas, an extra O(N) auxiliary space (to embody the groups' iterables to lists) and O(N squared) time (to get the L.index of every item). While premature optimization is the root of all evil in programming, deliberately picking an O(N ...
Django in / not in query
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table1.objects.extra(where=["table1.id NOT IN (SELECT table2.key_to_table1 FROM table2 WHERE table2.id = some_parm)"])
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Add vertical whitespace using Twitter Bootstrap?
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Could you give an example of a valid class string?
– Kolob Canyon
Nov 19 '18 at 17:40
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Post-install script with Python setuptools
...nt:
You will make a few additions to setup.py and there is no need for an extra file.
Also you need to consider two different post-installations; one for development/editable mode and the other one for install mode.
Add these two classes that includes your post-install script to setup.py:
from ...
How to change legend title in ggplot
...the most striaghtforward answer, it does exactly what OP asks for with one extra line at most
– Leo
Aug 14 '17 at 11:17
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Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
...usage with 1==1, while just using 1 will replace 1, isn't the first method extra comparision overhead... or it is made optimized compiler ?
– pinkpanther
Jun 9 '13 at 13:32
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eval command in Bash and its typical uses
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eval takes a string as its argument, and evaluates it as if you'd typed that string on a command line. (If you pass several arguments, they are first joined with spaces between them.)
${$n} is a syntax error in bash. Inside the braces, y...
jQuery AJAX file upload PHP
...g? Is always evaluating to true, so is useless, isn't it? Also you have an extra end-curly.
– Mr.Web
Oct 24 '17 at 13:24
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Generating an MD5 checksum of a file
...turn hash_md5.hexdigest()
Note: hash_md5.hexdigest() will return the hex string representation for the digest, if you just need the packed bytes use return hash_md5.digest(), so you don't have to convert back.
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Strings in a DataFrame, but dtype is object
...ll me that I have objects, although every item in the selected column is a string — even after explicit conversion.
4 Ans...